Coin-controlled lock for doors.



W. NAFFIN,

COIN CONTROLLED LOCK FOR DOORS.

APPLICATION FILED DEC. 19, 1913. RENEWED JULY 21,1915.

Patented Mar. 14, 1916.

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W. NAFFIN.

COIN CONTROLLED LOOK FOR DOORS.

APPLICATIONIFILED DEC. 19. I913. RENEWED JULYVZ7, 1915.

1,175,795. Patented Mar. 14, 1916.

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w. NAFFIN. COIN CONTROLLED LOCK FOR DOORS. APPLICATION FILED DEC. 19, 1913. RENEWED JULY 2 Patented Mar. 14, 1916.

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attowea ammo E IIIIlIlIlIIII/{fl lllfiilliillllllllllllllll-llllllillzl I MZZia/m WILLIAM NAFFIN, OF CAMDEN, NEW JERSEY.

COIN-CONTROLLED LOCK FOR DOORS.

Application filed December 19, 1913, Serial No. 807,716. Renewed July 27, 1915.

To all whom it may concern Be it known that I, WILLIAM NAFFIN, a subject of the Emperor of Germany, residing at Camden, in the county of Camden and State of New Jersey, have invented new and useful Improvements in Coin-Controlled Looks for Doors, of which the following is a specification.

This invention relates to. coin-controlled lock for doors, and is particularly designed to provide a lock for the doors of sanitary toilet closets, baggage and other lockers, etc.

The primary object of the invention is toprovide a door lock mechanism which is normally in locked position, against surreptitious opening from the outside, but which upon the deposit of a prescribed coin may be manipulated to unlock the door and allow it to be opened.

A further object of the invention is to provide a simple, reliable and efficient construction of coin-controlled lock which provides for the use of the coin as apower transmitting medium coupling elements of the lock mechanism, and which is adapted to free the coin for deposit when the parts of the lock mechanism are returned to normal position.

A further object of the invention is to provide a lock which. may be released from the inside, and. which allows of the lock bolt being directly unlocked by means of a master key without operating the coin-controlled elements of the lock mechanism.

A still further object of the invention is to provide a lock mechanism including a controlling key normally locked from movement and automatically released for movement by the actuation of the controlling mechanism upon the deposit of a proper coin, which key. may, if desired, be removed so that the door may be subsequently unlocked by the person depositing the coin.

A still further object of the invention is to provide a lock mechanism including a coin receptacle which may be locked in any preferred manner, and also additionally locked by the coin-controlled mechanism, thus giving added security.

The invention consists of reference being had to the'accompanylng drawings 1n which Figure 1 1s a view of a door embodyin Specification of Letters Patent.

the features of g Patented Mar. 14,1916.

Serial No. 42,236.

position. Fig. 2 is a fragmentary rear elevation, showing the bolt releasing means upon the inside of the door and the lock mechanism applied thereto. Fig. 3 is a vertical transverse section through the rear portion of the lock casing, showing the parts of the controlling mechanism in rear elevation. Fig. 4 is a vertical front to rear section through the door and lock mechanism,

showing the parts in normal position. Fig.

5 is a view similar to Fig. 4 showing the parts of the controlling mechanism elevated to release the lock bolt for action. Fig. 6 is a horizontal transverse section on the line 66 of Fig. 5. Fig. 7 is a view similar to Fig. 3 showing the parts in the position illustrated in Fig. 5. Fig. 8 is a vertical transverse section taken substantially on the line 88 of Fig. 4, showing the parts in the position shown in Figs. 5 and 7. Fig. 9 is a detail View of the actuating plunger. Fig. 10 is a similar view of one of the guides thereof. Fig. 11 is a fragmentary perspective view of the coin chute. Fig. 12 is a view of one of the key grippers. Fig. 13 is a similar view of the key. Fig. 1a is a detail view of the shank portion of the key and the collar thereon.

Referring to the drawings, 1 designates the door of a closet, locker or other like compartment, which is provided with slots 2 and 3 extending therethrough, and to the outer face of which is secured a guard or escutcheon plate 4 having a slot 5 registering with the slot 2 and slots 6 and 7 registering with the slot 3, the slot 7 constituting a coin induction slot.

Secured to the rear face of the door is a lock casing 8 including a front plate 9, a supporting or partition plate 10 disposed between said front plate and the back plate of the casing, and a horizontal partition plate 11. The partition 11 provides a lower compartment for containing a coin receptacle 12, which may be in the form of a drawer normally locked against removal by a bolt 13, adapted to be actuated by any suitable type of key, not herein shown, said bolt being adapted to engage a keeper socket in the plate 11, by which the drawer or reconstruction, combination and arrangement fceptacle is secured against intrusion except of parts herein fully described and claimed,

by an authorized person possessing a proper ype of key.

Mounted in the lock casing is a transersely sliding bolt 1i adapted to engage my invention, the door appearing in open. a suitable keeper on the door frame to lock the door in closed position. To the relatively inner end of this bolt, which passes completely through the casing. is attached one end of a chain or other flexible releasing connection 15 carrying an actuating handle 16, the other end of said chain or connection passing around a suitably journaled drum 17. It will be evident, of course, that by drawing inwardly on the chain the bolt may be retracted to unlock the door by a person from the inside of the closet, locker or other apartment. The shaft 18 of the drum 17 may be exposed through a key hole 19 in the door and suitably formed for engagement with a master key, whereby the bolt may be retracted and the door unlocked by an authorized person without actuating the coin governed lock controlling mechanism.

The bolt 14 is recessed to receive the bit 20 of a key 21, adapted to be inserted and withdrawn through the slots 2 and 5, said key having an angular shank 22 extending beyond its bit portion. The key when inserted is adapted to be engaged and normally locked against rotation and removal by a pair of grippers 23 slidable in suitable guides 24 and angularlv recessed to engage the angular stem of the key, one of said grippers being provided with proiections 25 to interlock with a recess 26in the key stem. and whereby the key will be held from rotation and also from longitudinal moveme t and withdrawal.

The grippers 23 are connected by toggle links 27 with a vertical sliding rod 28 adapted to be engaged at its lower end by a gravitv ret acted re easing rod or bar 29 conne ted wit or otherwise receiving motion f om a sliding primary operating device 3 ha i g av portion proiecting down wa d through and movable witbin the slot 6 and connected with 'a vertica y movable operating kn b o ha dle 31. The parts f the mechanism for lo king and releasing the kev are inc osed within the space or chamhen formed between the front wall9'and partiti n late 1 of the lock casing, as clearly ircated in Fig. 4. i V

he p a e 11 is DWfilClGCl with a slot 32 with which normally communicates the lower end of a coin chute or conductor 33 ca ied by the sliding operating member 30, which ch te normallv communicates at its unner an o ter end with the coin induction slot .7. The lower end of the chute is partially open for the o tward proiection of a coin 34 introduced therein. and is formed with a seat or abutment 35 against which t e edge of the coin is adapted to bear until discharged through the slot 32 into the receptacle 12. The plate 10 is provided with guide slots 36 and 37, in the former of which the lower end of the chute'33 is vertically movable.

is pivoted at its upper end by a pin 39 to ears 40 formed on a pair of spaced guide members 41 secured to the rearside of the wall 10, andis adapted for outward pivotal movement toward the rear wall of the casing to release the coin 34 under certain conditions. A releasing plunger 42 is movable between the guide members 41 and is provided at its sides with guide flanges or ribs 43 engaging guide grooves 44 in said guide members. At the lower end the plunger is segmentally cut away to form a guide recess 45 to receive the edge of the coin disposed in the lower end of the chute, so that when a proper coin is deposited such coin will form a connection between the chute and the plunger 42 allowing the latter to be forced upward for a lock releasing action.

lVhen no coin is present in the lower end ofthe chute, any upward movement of the operating member 30'would be of no efitcct in actuating the plunger 42. since the lower end of the chute is bifurcated or slotted. as

at 46 to receive the web 47 left remaining at thelower end of the plunger bv the formation of the recess 45, so that the operating member and chute may move upward to a normal degree under such conditions without imparting motion to the slide. If desired the chute may be provided with a locking pin 48 to engage a keener 49 on the coin receptacle 12, to gi e addltional security 7 against the surreptitious opening or withdrawal of said receptacle. by an unauthor- 176d person. The releasing plunger 42 is disposed beneath a stop 50 formed on they operating member and movable in the slot 37. which stop is normally engaged and held from any but a restricted upward movement by a ho izontal sliding detent 51 mounted on a guide plate 52 and normallyv held in. the path of said stop by a spring 53.

The plunger 42 is connected with the detent V by a releasing link 54 and has proiecting upwardly therefrom a stem 55 movable vertically through a guide opening in the stop 50 and carrying at its up er'end a cam shoe or head 56. The shoe 56 on being moved' upward is adapted to engage the cam member'57 of a pivoted. curved locking finger 58 engaging a recess 59 in a flange or collar 60 detachably fixed to the shank 22, whereby the key is normally held from rotation and can not be operated, even in the event of inoperativeness of the grippers 23. The collar 60 may besecured to the'shank 22 by a pin upon the removal of which said collar may be detached from the key.

In the use of my invention upon the door of a sanitary closet, it will of course be understood that upon the deposit of a proper coin in the chute'38 the coin will be held between the abutment and detent 3S and prevented from dropping down through the slot 82. The person depositing the coin may accordingly move the handle 31 upward, thus transmitting similar motion to the operating member 30 and chute 33 and also to the plunger 42 through the connection between the operating member and chute formed by the coin 34:. On such upward movement of the parts, the coin is held in position by the detent 38 and the detent or sliding stop 51 is moved against the resistance of the spring 53 out of the path of the stop 50, allowing the parts mentioned to be moved to the limit of their upward movements. Motion is accordingly transmitted to the member 29 and thence to the rod 28 and through the links 27 to the grippers 23, thus retracting the latter to permit the key to be drawn outward or turned. At the same time the cam shoe 56 is projected upward and engages the cam 57 thus tilting the finger 58 out of engagement with the recess 59 and releasing the shank 22 so that the key may be turned to enable the bolt 14: to be retracted. The door may thereupon be opened and then looked in closed position and the bolt finally retracted through the releasing connection 15 to enable the person to pass out. WVhen the door is opened and subsequently closed, upon the release of the handle 81 the parts of the controlling mechanism drop bygravity to normal position and the detent 38 swings backward under the momentum of the closing movement of the door, allowing the coin 34 to drop through the slot into the receptacle 32.

It will be understood, of course, that in the use of the device upon a sanitary toilet door, the key may be fined against withdrawal and released for rotary motion only under the action of -the coin-controlled mechanism, as it is desirable to allow the door to be opened once only for the deposit of each coin of the proper denomination.

In the practical use of the device upon a toilet door proper instructions will be applied to the door stating that after inserting the proper coin, the operator should raise the knob, turn the key in the proper direction to unlock the door and then pull. the door open. W hen the lock is used on the door of a baggage locker or similar compartment, proper directions will be placed upon the door to indicate that the operator should first insert a proper coin in the slot, then raise the knob and turn the key in the proper direction to unlock the door, and

pull the door open and take out the key before releasing hold of the knob. Also that when the party returns to remove the stored article, a coin should be inserted, the knob raised, the key inserted and turned to unlock the door, and the door opened, the grippers 23 thereupon locking the key from removal. The parts 57 and 60 are dispensed with when the lock is used 011 a baggage locker or like compartment, as these elements will ordinarily prevent the key from being removed.

I claim:

1. In a look, a bolt, a key for actuating the same, an operating member normally held from movement, a coin chute movable with said member, releasing means adapted to be connected by a coin with the chute to free said operating member for actuation, means for normally locking the key from rotation, and means operable through the movement of the operating member when released for freeing the key for rotation.

2. In a lock, a bolt, a key for actuating the same, a locking device for normally holding the key from rotation, an operating device, a coin chute connected therewith, a releasing plunger adapted to be coupled by the coin to the operating device, a detent for normally holding the plunger from movement, and means carried by the plunger for successively rendering the detent and locking means inoperative to permit motion of the operating device and free the key for rotation.

3. In a lock, a bolt, a key for actuating the same, a device for locking the key from rotation, a device for locking the key from movement and withdrawal, an operating device, means operable upon the movement thereof to retract the key locking devices, a detent for holding the operating device from movement, a coin chute connected with the operating device, a plunger adapted to be coupled by the inserted coin with the chute, and means controlled by the plunger for successively retracting the detent and releasing the key locking devices.

4. In a lock. a bolt, a key for actuating the same. an operating device, a locking device for holding the key from rotation, a coin chute connected with the operating device, a detent for holding the operating device from movement, a plunger coupled to the operating device by the inserted coin, means operated thereby for successively retracting the detent and KGV locking device, and a gravity controlled coin detent adapted to maintain the coin in engagement with the chute until the key is released and to be retracted by the motion of the door when closed and locked to free the coin for final deposit.

5. In a door look, a locking bolt, a key for operating the same, a locking device for holding the key from rotation, an operating member, a detent for holding the same from movement, a plunger adapted to be coupled to the operating member by the inserted coin, means controlled by the slide for retracting the detent and first-named locking device, and means controlled by the operating member for retracting the secondnamed locking device.

6., In a lock for doors, a locking bolt, a key for actuating the same, a locking device to engage and hold the key from rotation, a locking device for holding the key from Withdrawal, a sliding operating de vice, means directly controlled thereby for releasing the second-named locking device, a detentrfor holding the sliding' operating device from movement, and a sliding plunger adapted to be coupled tothe slidingopcrating device by the inserted coin for successively retracting the detent and'releasing the first-named locking device.

In-testimony whereof I afiiX my signature in presence of two Witnesses.

I WILLIAM NAFFIN.

Witnesses GEORGE NOBLE, PHILIP SoHMrrz.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. 

